FL Bushing Die / Mandrel Question
In another thread it was suggested to use both full length bushing dies, and a mandrel. Can someone explain the reason for needing both? I haven't been able to fully wrap my mind around the idea of needing a mandrel because I thought the reason for using a bushing die was to get exact neck tension.
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I believe Sinclair does have one. But they do bot have to match. It’s ok if you use a bushing to go mildly past it. .001 smaller than a mandrel is certainly mild, and won’t work the brass that much. The brass will spring back some, as well. So if you use a mandrel .001” smaller than bullet diameter, it’ll end up around .0015-.002 depending if it’s annealed brass or not.